VA water seal, also known as V‑ring seal, is an all‑rubber axial lip seal designed for rotary shaft end‑face protection. Without any metal reinforcement, this flexible rubber component rotates together with the shaft. Its main function is to block water, dust, splashes and debris from entering bearing housings, meanwhile retaining internal grease and lubricant inside assemblies.
As an experienced VA seal manufacturer, we deliver standard off‑the‑shelf sizes and custom‑made solutions. Made‑to‑order dimensions and rubber compounds are available for special working environments. Thanks to simple structure and stretchable rubber body, installation can be completed without full machine disassembly, greatly lowering assembly and maintenance costs for end users.
Material Options
NBR VA Water Seal
NBR is the cost‑effective material for general‑purpose VA water seal. It shows good elasticity and moderate resistance to water, grease and mineral‑based oils. This grade works well under normal‑temperature, wet and dusty conditions, widely used for water pumps, electric motors and general industrial equipment maintenance. Large‑volume wholesale orders are supported.
FKM VA Water Seal
FKM fluororubber serves as high‑performance option for harsh operating conditions. It withstands higher temperature, steam, weak acid‑alkali media and chemical splashes where ordinary rubber fails. This V‑ring seal is preferred for heavy‑duty machinery, high‑temperature processing equipment and outdoor facilities requiring long service lifeMade-in-Ch....
Key Features
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Entirely rubber‑made, no metal insert; easy to stretch and mount directly onto shafts
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Tolerates certain shaft eccentricity and misalignment
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Works for non‑pressure axial end‑face sealing; relies on lip elastic contact for protection
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Centrifugal effect during rotation helps throw off water and dirt splashes
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Available in wide diameter range, large‑size split versions can be supplied for field installation
Typical Applications
VA water seal acts as effective primary or secondary exclusion seal across many industries:
‑ Water pumps, mixers and rotary joint equipment
‑ Electric motors, gearboxes and bearing assemblies
‑ Agricultural machinery, construction machinery exposed to water and mud
‑ Rolling mills, metallurgical equipment and processing lines
‑ Outdoor equipment subject to splash, dust and humid atmosphere
We can adjust inner diameter, outer diameter and rubber formula according to your shaft dimension, rotating speed, temperature and contacting media.
FAQ
Q: What is a VA water seal used for?
A: VA water seal (V‑ring seal) is an axial rotary shaft exclusion seal. It keeps water, dust and contaminants out of bearing housing, and prevents grease leakage. It is widely used as shaft protection for pumps, motors and various rotating machinery.
Q: What is the difference between VA, VS and VL V‑ring seals?
A: VA is standard general‑purpose type with intermediate cross‑section, most widely adopted. VS features tapered profile for higher radial force for high‑speed shafts. VL is heavy‑duty version for large‑diameter heavy‑load equipment.
Q: Does VA water seal need groove processing?
A: Normally no special groove is required. It can be directly sleeved onto shaft and presses against end face, which simplifies mechanical design.
Q: Can you produce custom‑size VA water seals?
A: Yes. We support custom inner & outer diameter, special hardness and rubber compound. Small sample batches and large wholesale orders are both acceptable. Please provide shaft size and working conditions for quotation.
Whether you need standard replacement VA water seal or custom V‑ring sealing solution for special machinery, our technical team can offer material recommendation and professional support. Send us your specifications to get a free quotation.
Sanmen Yachang Trade Co.,Ltd
